• Journal of Korean Society for Quality Management
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• v.17 no.2
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• pp.93-100
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• 1989

Nonlinear rank statistics for the simple tree alternatives problem are considered. Pitman efficiencies between several procedures are studied. A new maximin procedure is suggested and shown to have good efficiency properties. Additionally, it is desirable to terminate the experiment early comparing well known rank statistics or multiple comparison test statistics.

• Journal of Korean Society for Quality Management
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• v.13 no.2
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• pp.56-60
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• 1985

One may be particularly interested in identifying which are the genuinely exceptional observations, in order to create a new insight into the phenomena under study. To detect outliers, many statistics have been proposed such as the maximum normed residual (MNR), a statistic equivalent to the maximum normed residual C. Daniel proposed, studentized residual, standardized residual, and so on. This paper gives a procedure for calculating critical values of the maximum modified normed residual and the distribution of the modified normed residual.

• Journal of Korean Society for Quality Management
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• v.20 no.1
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• pp.33-38
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• 1992

Consider a situation that a specific treatment is regarded as the best in comparing several treatments. In this case, a natural procedure to decide the best treatment is to choose the specific one which is proved to be better than each one of the others. This study proposes a method for detecting the best by comparing two treatments from the above point of view. Since this method deals with comparing only two treatments, it is very simple to use and expected to be widely applicable.

• Journal of Korean Society for Quality Management
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• v.26 no.3
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• pp.82-99
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• 1998

In sampling survey the nonresponse reduces the precision of the estimator becuase of the nonresponse bias of the estimator. Deville, et al.(1993) considered the generalized raking procedure with the auxiliary information under five distance measures for reducing the nonresponse bias of the estimator. This paper extends the classical weighting adjustment of Deville, et al.(1993) to the stratified sampling case with three among five measures.

• Journal of Korean Society for Quality Management
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• v.9 no.2
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• pp.2-9
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• 1981

This paper deals with the critical role when adjustments of the regression model parameters play in forecasting. It attempts to formulate a methodology or systematic procedure for (1) detecting the points of adjustments and (2) finding the adjusted regression model parameters. The paper shows how the information of past experience in forecasting can be used future forecasting.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2001.04a
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• pp.418-421
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• 2001

For insuring and guaranteeing the quality and efficiency of machine tool from design phase, we studied the reliability analysis and design review method. We researched the feasibility study machining center with the proposed procedure and described the analysis outputs. From this study will contribute to guide and introduce the reliability design in developing and producing phase of high quality product.

• Journal of Industrial Technology
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• v.16
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• pp.207-216
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• 1996

This paper develops an algorithm for throughput of a 3-stage flow line with job inspection stations, limited buffer capacity, and exponential processing times. Each stage consists of a single workstation, and an infinite number of jobs always waits in front of the first workstation. Blocking may occur when a processed job is waiting at one workstation for another workstation to become available. Numerical example results provide insights into the problems related to quality inspection and measure of performance of flow lines.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.10 no.15
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• pp.39-44
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• 1987

A model for obtaining optimal target value and optimal production quantity of the process is described when the mean quality characteristic decreases according to the increase of production quantity. Two different cases are considered where defective items can be either sold at a reduced unit price or discarded. Some numerical examples are also given.

• Proceedings of the Korean Society for Quality Management Conference
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• 2004.04a
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• pp.507-512
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• 2004

This research investigates economic-statistical characteristics of variable sampling size & interval(VSSI) X charts under two assignable causes. We propose the procedure for designing VSSI X charts, based on Lorenzen and Vance model. Computational experiments show that the VSSI X chart Is superior to the Shewhart X chart in the economic-statistical sense, even under two assignable causes

• Journal of Korean Society for Quality Management
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• v.25 no.4
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• pp.131-139
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• 1997

In EMS(environmental management system), environmental documents are very important elements to achieve ISO 14000 series certification. A organization or company which hope to acquire the certification must prescribe daily operation procedure and document them properly. Also these documents must be updated in new version. Especially, environment manual, describing EMS factors and correlation between them, is a basic document system. Therefore, a proper manual management tool help a organization or company to reduce the efforts to establish and to revise documents. So, in this paper we will present environment manual management system using database and a, pp.ication computer program.